Analog Devices Inc. DC1053A-G

Overview

DC1053A-G from Analog Devices (formerly Linear Technology) is a demonstration board for the LTC3526LEDC-2 synchronous boost DC/DC converter, designed to evaluate high-efficiency 2MHz operation with burst mode, 2.2µH inductor, and output disconnect capability in battery-powered portable electronics. It supports input voltages from 0.8V to 5.5V and delivers regulated 1.8V, 3.3V, or 5V outputs with ±2.5% accuracy at up to 100mA load.

For engineers reviewing the DC1053A-G datasheet, DC1053A-G pinout, DC1053A-G application, or DC1053A-G equivalent, this board enables rapid validation of LTC3526LEDC-2 performance under low-input-voltage conditions, burst-mode efficiency trade-offs, output ripple behavior near Vin ≈ Vout, and jumper-configurable regulation-critical for ultra-low-power wearable and sensor node designs.

Technical Context

The DC1053A-G implements the LTC3526LEDC-2 IC in a fixed-frequency 2MHz switching configuration with burst mode enabled, using a 2.2µH power inductor and integrated 550mA MOSFET switches. Its thermal layout leverages the 2mm × 2mm DFN package's exposed pad for enhanced heat dissipation during continuous light-load operation.

This board supports three selectable output voltages via jumpers JP1–JP3 (1.8V, 3.3V, 5V), provides output disconnect during shutdown, and maintains regulation even when input voltage exceeds output-enabling flexible supply rail sequencing and backup battery switchover scenarios.

Key Specifications

Availability

DC1053A-G is available at Aetrix Electronics and suitable for portable medical sensors, low-power IoT edge nodes, and energy-harvesting subsystems requiring stable component supply, fast evaluation turnaround, and verified reference design implementation.

Supply support for DC1053A-G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors.

The LTC3526L family-including the LTC3526LEDC-2 used on DC1053A-G-was engineered for ultra-low-voltage, high-efficiency boost conversion in space-constrained, battery-operated applications where startup below 1V and quiescent current minimization are critical.

FAQ

What is the primary function of the DC1053A-G demonstration board?

The DC1053A-G is a fully assembled evaluation platform for the LTC3526LEDC-2 synchronous boost converter. It allows engineers to validate key performance metrics-including startup behavior below 1V, burst-mode efficiency, output ripple under light loads, and jumper-configurable regulation-without designing custom hardware. The DC1053A-G directly implements the recommended layout and component selection from the LTC3526LEDC-2 datasheet.

Which IC does the DC1053A-G evaluate, and what is its marking?

The DC1053A-G evaluates the LTC3526LEDC-2, a 2MHz, burst-mode-enabled synchronous boost converter. Its physical marking on the board is "LFFC", as confirmed in Table 2 of the Quick Start Guide. This distinguishes it from other variants like LTC3526LBEDC-2 (LFFD) or 1MHz versions (LCSS/LCST).

How do I configure the output voltage on the DC1053A-G?

Output voltage on the DC1053A-G is set using surface-mount jumpers JP1, JP2, and JP3. Installing JP1 only selects 1.8V; JP2 only selects 3.3V; JP3 only selects 5V. With no jumpers installed, the default output is 5V. These configurations route feedback resistors to match the target regulation point per the LTC3526LEDC-2's internal reference and resistor-divider scheme.

Does the DC1053A-G support output disconnect, and how is it verified?

Yes, the DC1053A-G supports output disconnect when the LTC3526LEDC-2 is in shutdown (via JP4 OFF). This is preserved because no external Schottky diode (D1) is soldered-per the Quick Start Guide, adding D1 defeats output disconnect. Verification is done by measuring open-circuit VOUT while VIN is applied and EN is pulled low; no leakage path to GND or VIN should be present.

Why does output ripple increase when input voltage approaches output voltage on the DC1053A-G?

On the DC1053A-G, output ripple increases (up to 100mV p-p) when VIN is within 100–300mV below VOUT due to reduced duty cycle headroom and higher inductor current ripple in the LTC3526LEDC-2's control loop. This is documented in the Quick Start Guide and correlates with the IC's fixed-frequency PWM operation at 2MHz. Increasing output capacitance mitigates this effect, as confirmed by board-level testing recommendations.